baber/WOPTO huggingface dataset:
Patent GB-928119-A (GB)
Title: Improvements in or relating to electromagnetic switches retained set by remanent magnetism
IPC: H01H51/01
Filed: 1961-06-22
Abstract: The core of an electromagnetic switch retained set by remanent magnetism is made from: 1.2% carbon, 0.3% manganese, 0.22% silicon, 0.1% vanadium, 0.025% sulphur and phosphorous, and the rest iron. This steel is heated at 1475 DEG  F. \sB 25 DEG  F. for 30 minutes, quenched in water, reheated for 30 minutes at from 850 DEG  F. to 950 DEG  F. and finally cooled in air so that it has a hardness of between 54 and 64 on the Rockwell 30 N hardness scale.
Patent GB-1323828-A (GB)
Title: Semiconductor devices
IPC: H01L23/31
Filed: 1971-04-19
Abstract: 1323828 Semi-conductor devices WESTERN ELECTRIC CO Inc 19 April 1971 [3 March 1970] 22703/71 Heading H1K A Schottky diode (Fig. 1) comprises a monocrystalline N + silicon substrate 11.1 overlain by epitaxially grown N zone 11.2; a metal ohmic electrode 12 of e.g. Cr-Ag being applied to the bottom surface of zone 11�1 and a Schottky barrier contact 13 of e.g. Pt or PtSi being applied to the top surface of zone 11.2; the contacts having wire leads attached. The angle α between the sides of the element and the top surface is <90 degrees, the sides are coated with passivating SiO 2  and the electrode contact overhangs the top of the semi-conductor by a length L which is several multiples of the Debye length and of the depletion region thickness in zone 11.2 for maximum normal voltage. In production, the electrodes are vapour deposited and the body coated with resistant wax save for a ring surrounding the lower electrode and immersed in isotropic etchant HF + HNO 3  until the required body shape is obtained, after which the passivating oxide is sputtered on and the leads bonded. Plural diodes may be fabricated on a single substrate and divided, and the bottom surface masking provided by the plural electrodes. Crystallographic etching along preferred planes may be used; the crystal being appropriately oriented and formed with electrodes parallel to 110 direction, after which the body is SiO 2  masked save for a rectangular ring surrounding the bottom electrode, and etched in crystallographic solution e.g. KOH + n-propanol in H 2 O until the top electrode is reached; providing the overhang and the appropriate side/top surface angles (Figs. 3, 4, not shown) after which the passivating SiO 2  is sputtered on the side surfaces. The electric field at the corner of the semiconductor adjacent the Schottky electrode must be regular and non singular to avoid undesirable edge effects, and the ranges of values of α to obtain this are shown in terms of # the carrier angle of the electrode and (Fig. 6, not shown). The ohmic electrode may be Ni or Al, the Schottky electrode may be Pd or Au or Mo, and the semi-conductor may be Ge or GaAs. Ambient atmosphere or a semi-conductor may be used as passivating layer, and the device may form part of an integrated circuit.
Patent GB-457968-A (GB)
Title: Improvements in or relating to furnaces for boilers and water heaters
IPC: F24H1/24
Filed: 1936-08-19
Abstract: 457,968. Sectional boilers. COMPAGNIE NATIONALE DES RADIATEURS, 149, Boulevard Haussmann, Paris. Aug. 19, 1936, No. 22821. Convention date, July 17. Addition to 446,058. [Class 123 (ii)] [See also Group XII] The water-heating boiler described in the parent Specification is adapted for the generation of steam by providing the water jacket 5 of the combustion tunnel with a steam and water chamber 21 having the water at the same level as that in the main boiler and the steam space in communication with the boiler outlet.
Patent GB-1046613-A (GB)
Title: Method and apparatus for the electrostatic power-coating of objects
Inventor: BARFORD JOHN COWPER
IPC: B05D1/24
Filed: 1962-06-22
Abstract: An object is coated with an electrically insulating glass or ceramic powder by positioning it above the powder in the form of a fluidized bed containing one or more ionising electrodes at a high potential difference with respect to the object.  The process is applicable to the coating of metal wire, strip or grid.  Apparatus is described comprising a fluidized bed container containing pointed electrodes the tips of which are just below the surface of the fluidized bed which are connected to one pole of a high-voltage generator; the objects to be coated are conductively suspended from an earthed conveyer, or in the case of continuous lengths are fed from an earthed reel, so as to pass over the bed; the other pole of the generator is also earthed. The objects may be heated before and/or after coating.ALSO:An object is coated with an electrically insulating powder by positioning it above the powder in the form of a fluidized bed containing one or more ionizing electrodes at a high potential difference with respect to the object.  The process is applicable to the coating of metal wire, strip or grid with polyethylene, polyvinyl chloride, polyamide, epoxy resin or cellulosic plastic, or with glass or ceramic materials.  Apparatus is described comprising a fluidized bed container containing pointed electrodes the tips of which are just below the surface of the fluidized bed which are connected to one pole of a high-voltage generator; the p  objects to be coated are conductively suspended from an earthed conveyor, or in the case of continuous lengths are fed from an earthed reel, so as to pass over the bed; the other pole of the generator is also earthed.  The objects may be heated before and/or after coating.
Patent GB-1177233-A (GB)
Title: Dimerization of Alcohols
IPC: C07C29/34
Filed: 1967-05-17
Abstract: 1,177,233. Dimerization of primary and secondary alcohols. MONTECATINI EDISON S.p.A. 17 May, 1967 [18 May, 1966], No. 22970/67. Heading C2C. Primary or secondary alcohols containing a chain branched at position 2 are prepared by the condensation of (1) an alcohol or mixture of non-branched primary or secondary alcohols of the general formulµ wherein R 1  is alkyl, cycloalkyl, aryl or aralkyl containing up to 20 C atoms, R 2  and R 3  are alkyl containing 1-6 C atoms or taken together with the cations to which they are bound constitute a cycloaliphatic ring containing up to 12 cations or (2) a mixture of the aforesaid non-branched primary alcohol with a primary alcohol branched at position 2 having the formula wherein R 4  and R 5  are the same or different alkyl radicals containing from 1-10 C atoms, in the presence of a metallic Pt, Pd, Rh or Ru catalyst and a condensing agent comprising an alkali metal or alkali metal compound that gives a basic reaction under the operating conditions, the catalyst being finely divided so that at least 80% of the particles are smaller than 150 Á and at least 20% are smaller than 50 Á. The catalyst is preferably supported on active carbon, alumina, calcium carbonate or barium sulphate.
Patent GB-647497-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J19/42
Filed: 1947-08-19
Abstract: 647,497. Thermionic valves. PHILIPS ELECTRICAL, Ltd. Aug. 19, 1947, No. 22977. Convention date, Aug. 22, 1946. [Class 39 (i)] The cathode and grid electrodes 1, 2, 3 of a valve, Fig. 1, are centred and supported by insulating spacers 4 which are clamped in grooves 6 at the ends of a two-part anode 5. attached to each anode half is a cylinder 7 through which is welded a support-rod 8 of narrower diameter, to reduce heat transfer. The other electrodes are thus supported only from the anode. In a modification, Fig. 3, each spacer is in halves 12<SP>1</SP> which are clamped in grooves 17 in the anode halves, which are then clamped round the remaining electrodes while held in a jig.
Patent GB-1475283-A (GB)
Title: Liquid fuel injection pumping apparatus
IPC: F02M59/10
Filed: 1973-05-15
Abstract: 1475283 Fuel injection apparatus CAV Ltd 6 May 1974 [15 May 1973] 23005/73 Heading FIB A fuel injection apparatus includes a control valve 10 having an axially movable valve-member 11 one end of which is shaped to co-operate with a seating to control the flow of fuel through an outlet 12, and a backing piston 13 which can be subjected to fluid-pressure so as to urge the valvemember 11 into contact with its seating, the apparatus including means 22 for supplying a control pressure to act on the backing piston. The operation of apparatus is described in Specification 1475282. The control valve 10 and an injector valve 27 may be combined Fig. 1, (not shown), and the movement of a displacement piston 15 may be limited hydraulically Figs. 3 and 4, (not shown). An adjustable stop (38) under the control of a device (41) provides for variable quantities of injected fuel.
Patent GB-647190-A (GB)
Title: Improvements in and relating to pipe joints
IPC: F16L13/02
Filed: 1948-09-01
Abstract: 647,190. Pipe joints. BRAITHWAITE & CO., ENGINEERS, Ltd., and LAMOND, A. Sept. 1, 1948, No. 23006. [Class 99(i)] '[Also in Group XXII] In a pipe joint comprising two cup-like parts 1. 2 which have inter-engaging partspherical rim portions 3, 4 permitting an angular setting of the pipes, and neck portions 9, 10 for connection thereto respectively, the parts 1, 2 are fabricated either as pressings with welded seams, or rollings, which are secured one within the other and to the pipes by welding. The edges of the segments may be V-shaped to facilitate welding, and the joints of the parts 1, 2 may be staggered.
Patent GB-242601-A (GB)
Title: Improvements in and relating to speed conversion gear for electric motors
IPC: H02K7/116
Filed: 1925-09-15
Abstract: 242,601. Lott, C. Nov. 7, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Driving-arrangements.-Speed conversion gear for electric motors is located in one of the bearing-plates which forms a gear box, the rotor shaft being bored out to accommodate the driven shaft. As shown, the bearing-plate 1 forms with the cover plate 3 a gear box housing speed conversion gear 6 - - 10, the driven shaft 5 passing through the rotor shaft 4. Any type of gearing may be employed.
Patent GB-1094125-A (GB)
Title: Improvements in or relating to ventilators
Inventor: HOWARD RUSSELL LAMBIE RAYMOND
IPC: F04D29/54
Filed: 1964-06-03
Abstract: 1,094,125. Ventilators. COLT VENTILA- ! TION & HEATING Ltd. May 26, 1965 [June 3, 1964], No. 23062/64. Heading F4V. A powered discharge ventilator comprises a rectangular section air flow passage 12 and an axial flow fan 20 running in the downstream end of a circular section shroud 25 which has a flared intake end cut away on four sides to be accommodated in the upstream end of the passage 12. The fan motor 18 is supported by arms 17 on substantially triangular plates 15 secured to the passage 12. A non-return shutter assembly 13 and a cowl 14 are provided. In operation an induced air flow passes between the passage 12 and the shroud 25. A rectangular section extension trunking 35 may be provided.
Patent GB-303732-A (GB)
Title: Improved gripping attachment for cigarette and cigar holders
IPC: A24F13/22
Filed: 1928-08-10
Abstract: 303,732. Taylor, H. E. R. Aug. 10, 1928. No Patent granted (Sealing fee not paid). Cigar and cigarette holders.- To the front end of a cigar or cigarette holder is pivoted a pair of arms A pressed together by a spring E, or formed of resilient material. The free ends of the arms abut against a pin F.
Patent GB-234353-A (GB)
Title: Improvements in or relating to variable speed gears
IPC: F16H61/02
Filed: 1924-09-30
Abstract: 234,353. Benjaminowitsch, W. G., Benjaminowitsch, W. S., and Hillmann, H. Sept. 30, 1924. Controlling variable-speed gearing.-In variable-speed epicyclic gearing of the kind comprising loose internally-toothed rings 17, 11, 12, Fig. 1, which are held alternatively by brakes to produce different speeds, solid driving is effected by jamming these rings all together by an axial thrust. The driving- shaft 1 extends through the gearing and is supported in the hollow driven shaft 2. Upon the shaft 1 are secured sun gears 15, 4. The driven shaft 2 is continued from right to left through a planet-carrying frame 7, 8, 19, and on its extension carries a disc 23, Fig. 6, by which this axial thrust is applied. There are friction discs 26 between the rings 17, 11, 12 to increase the clutching action. The pressure disc 23 is thrust into action by a spring 24 when released by an axially sliding cam 32 in turn operated by a revoluble cam 76, Fig. 1, which may be upon the steering column of a vehicle. The cam 76 is mounted to turn with resilient cams 49, 54, the whole being turned by a wheel 44. The active flanges of the cams 49, 54 yield separately against springs 46, 48. The cams 49, 54 are connected through bell-crank levers 51, 56 to telescoping rods 53, 57, Fig. 3, which thrust non- revoluble rings 38, 39 to left and right to apply four braking actions. The rings 17, 11, 12 are braked to effect three reduced speeds, and a disc 22 secured to a loose sun gear 21 is braked for reversed driving. The rings 17, 11, 12 are braked by thrusting rings 18, 13, 14 which are splined upon them into engagement with rings 86, 35 fast or spring-mounted on a fixed casing 3. The driven shaft 2 is braked by thrusting a non-revoluble ring 40 against the pressure disc 23, which is done by depressing a pedal lever 60. This pedal is also connected through a linkage 62, 63, 64 to the main brakes of the vehicles. An additional cam 73 on the column may be provided to operate the brake lever 60. When the lever 60 is depressed, a double cam lever 67 engages the levers 51, 56 to disengage any drive which may be in action.
Patent GB-1121989-A (GB)
Title: Ventilation plant
Inventor: CAILLE CHARLES
IPC: F24F7/08
Filed: 1967-05-18
Abstract: 1,121,989. Ventilating. SULZER BROS. Ltd. 18 May, 1967 [18 May, 1966], No. 23199/67. Heading F4V. In a ventilation plant for a warehouse in which goods are stacked in rows having aisles therebetween, air is supplied to the aisles through two sets of ducts one set connected to supply and the other to suction so that by changing over the connections all parts of the warehouse are adequately ventilated. One set of ducts is connected to a header 5 and the other set to a header 7, the headers leading to main ducts 6, 8 respectively and receiving conditioned air from a unit 10. Valves 12, 13 operated by a motor 16 direct the air from unit 10 to one of the main ducts and lead air from the other main duct through a pipe 17 or 18 back to the unit. The unit 10 may include air heaters or coolers, drop separators and moisteners and also a fan. A honeycomb grid to straighten the air flow may be included in each nozzle 19.
Patent GB-895132-A (GB)
Title: Improvements in a mine hoisting system
IPC: B66B1/42
Filed: 1960-07-04
Abstract: 895,132. Pit-head winding gear. SOC. DES FORGES ET ATELIERS DU CREUSOT. July 4, 1960 [July 3, 1959], No. 23266/60. Class 78 (5). A mine hoisting system comprises a pit-head pulley 1 comprising main brake shoes 3 operable to arrest the pit cage at a prescribed pit level, and auxiliary brake means 8 engageable with the pulley 1 and mounted for limited angular displacements bodily and coaxially with the pulley 1 when in the engaged condition. Senser means (not shown) are positioned at the pit level for sensing minor displacements of the cage due to rope stretch, and actuator means 15 are operated from the sensor means for imparting compensatory angular movements to the auxiliary brake means 8 to oppose the displacements. In Fig. 1, auxiliary brake shoes 8, 8 (one only can be seen in Fig. 1) are journalled on eccentric portions 7 of a shaft 6 which is carried by arms 5 journalled on the shaft 2 of the winding pulley 1. A pneumatic piston and cylinder 12 acts on an arm 9 rigid with the shaft 6. The latter is coupled by a member 14 to a fluid pressure piston and cylinder 15. In operation, when the cage engages contacts adjacent the desired pit level, conventional circuitry results in the actuation of the main brake shoes 3, 3. After a suitable delay (produced by means not shown) the brake shoes 3 are released and the cylinder 12 is actuated to apply the brake shoes 8, 8. A suitable positional senser (not shown) is provided at the pit level in question for sensing minor cage departures from the level and associated servomechanism (not shown) operates the cylinder 15 to displace the brake shoes 8, 8 and thus rotate the driving pulley 1 so as to maintain a senser signal at a predetermined reference value thereby holding the cage in its constant desired vertical position. When the brake shoes 8, 8 are in their non-braking position, a roller 18 carried by an arm rigid with the shaft 6, bears on a surface 19 which is concentric with the pivot 2. This prevents friction in the bearing of the pivot 2 during winding operations. In a modification (Fig. 3) the shaft 6 is carried by plates 20 which are mounted on rollers 21. The latter bear on the surface of a block 22 concentric with the axis of the pivot 2. The piston 15 may be replaced by a spindle which is displaced by a screw-and-nut mechanism rotated by an electric motor (Figs. 5 and 6, not shown). The drive shaft of the motor may be connected to a follow-up generator for providing the necessary feedback action for the servosystem.
Patent GB-733287-A (GB)
Title: A process of dry metallurgy of lead, antimony, tin, copper and zinc
IPC: C22B5/00
Filed: 1953-08-24
Abstract: A dry process for extracting lead, antimony, tin, copper or zinc from their ores comprises separation of the metal from a molten silicalime-alumina slag having a composition within the 1300 DEG C. isotherm on the silica lime alumina ternary diagram.  The extraction of metal may be from a sulphide ore, e.g. galena or stibnite, by the action of iron or from an oxidized ore, e.g. cassiterite, by reduction with carbon.
Patent GB-778891-A (GB)
Title: Improvements in permanent magnet structures and moving coil instruments incorporating such structures
Filed: 1955-08-12
Abstract: 778,891. Magnets. SANGAMO WESTON, Ltd. Aug. 12, 1955 [Aug. 19, 1954], No. 23333/55. Class 35. [Also in Group XXXVI] A Y-shaped permanent magnet has the ends of its arms of opposite polarity to that of the base as shown in the Figure and an annular yoke of high permeability material encloses the magnet, so that its arms magnetically contact the inner surface of the yoke and its base is spaced from the yoke to form an air gap of a moving coil electrical measuring instrument (see Group XXXVI). A moving coil is pivotally supported for swing- ing movement about an axis disposed between the arms of the magnet with the other coil sideportion movable circumferentially along the air gap (Figs. 2, 3 and 4 (not shown)).
Patent GB-749111-A (GB)
Title: Improvements in or relating to telephone handsets
IPC: H04M1/03
Filed: 1952-09-17
Abstract: 749,111. Mouthpieces. JUNGHANS, H. Sept. 17, 1952, No. 23349/52. Class 40 (4). A telephone mouthpiece which encloses the mouth in a sound-tight manner to prevent overhearing by persons in the vicinity of the speaker is provided with respiration valves. An attachment for a telephone handset, Fig. 1, comprises a cylindrical casing 2, coupled to the telephone transmitter 1b by a rubber sleeve 3 on a knee-piece 2a. The cylindrical body 4 of the mouthpiece is held in the casing 2 by felt rings 5 and 6 and plate valves 8 and 14 permit expiration and inhalation. Sound from the speaker is directed by an inclined surface 4b to the microphone of the handset through a hole 4e and a diaphragm 7 of sound-permeable but moisture-tight material, and sound passing through the exhalation valve is absorbed in a labyrinth 4i surrounding a glass wool sound filter 10. A replaceable pulp insert 12, Fig. 2, is provided for hygienic purposes. In Fig. 3, a casing 106 containing a microphone 115 and incorporating a belled mouthpiece and respiration valves is coupled to the handle of a receiver by a crank-handled lever arrangement 104 for adjusting the relative positions of the mouthpiece and earpiece. The microphone is protected by a moisture-proof diaphragm 117 which is connected by a stud 119 to the diaphragm of the microphone and air is led from the expiration valve 110 through a channel 111 to a filter chamber of the kind used in the previous embodiment. Alternative lever and ratchet arrangements for adjusting the mouthpiece relative to the earpiece are described with reference to Figs. 6-8 and 11-14 (not shown), and earpieces adjustable relative to the handle are described with reference to Figs. 7, 9 and 10 (not shown). An alternative filter chamber arrangement comprising a stack of plates bored with holes out of correspondence is also described with reference to Figs. 15 and 16 (not .shown). The use of a microphone enclosed as described and having a mouthpiece according to the invention as an addition to the normal handset on a telephone set is referred to.
Patent GB-997944-A (GB)
Title: Improvements in or relating to magnetic recording arrangements
IPC: G11B5/09
Filed: 1961-06-29
Abstract: 997,944. Transistor oscillator circuits. TELEFUNKEN PATENTVERWALTUNGSG.m.b.H. June 29, 1961 [June 30, 1960], No. 23547/61. Heading H3T. [Also in Division G4] In an arrangement for recording binary digital data on a magnetic recording surface (not shown), a freely running multivibrator comprising transistors T 1 , T 2  normally supplies an erasing frequency of different direct current voltages in its different phase positions via a pushpull amplifier T 3 , T 4  to a magnetic recording head M. By applying appropriate potentials to one or other of diodes D 1 , D 2 , the multivibrator may be locked temporarily in one or the other of its two states, thereby causing a binary " 0 " or " 1 " to be recorded on the surface.
Patent GB-1043763-A (GB)
Title: Production of monovinylacetylene
IPC: C07C2/38
Filed: 1965-06-02
Abstract: Monovinylacetylene is obtained by dimerizing acetylene in the presence of an aqueous catalyst dispersion of cuprous and potassium chlorides and a diethylene glycol mono (C1-C8) alkyl ether, condensing water vapour in the gaseous product, absorbing any ether in the condensate on activated charcoal, recovering ether from the charcoal by extracting with acetone, adding the acetone/ether extract to the catalyst and recovering monovinylacetylene from the gaseous product by solution in acetone. The acetone content of the condensate is reduced to below 1% by distillation before contact with the charcoal.
Patent GB-628364-A (GB)
Title: Improvements relating to hand appliances for rug-making
IPC: D04G3/02
Filed: 1947-08-27
Abstract: 628,364. Hand appliances for rug-making. EASTERBROOK, C. M. Aug. 27, 1947, No. 23701. [Class 142 (iv)] A frame for rug-making by hand consists of a pair of side members 1 and a number of bars 2 spaced apart between them, the bars being grooved along their top and bottom surfaces 3. End bars 4, 5 are similarly grooved and are pivoted to the side members which have notches 8 in alignment with the grooves. In a modified form, the end bars are fixed to the side members and are cylindrical or radiused. In operation the frame is stitched by the bars to rug backing material (not shown) with pile-forming yarn ; a knife is run along each groove except the last ; the frame is turned over onto a further area of backing material while the end bar is held in position by its row of stitches, and the process repeated.